#include <stdio.h>
#include "cryptlib.h"
#include <openssl/dso.h>
#ifndef DSO_DL
DSO_METHOD *DSO_METHOD_dl(void)
{
return NULL;
}
#else
#include <dl.h>
#define DSO_MAX_TRANSLATED_SIZE 256
static int dl_load(DSO *dso);
static int dl_unload(DSO *dso);
static void *dl_bind_var(DSO *dso, const char *symname);
static DSO_FUNC_TYPE dl_bind_func(DSO *dso, const char *symname);
#if 0
static int dl_unbind_var(DSO *dso, char *symname, void *symptr);
static int dl_unbind_func(DSO *dso, char *symname, DSO_FUNC_TYPE symptr);
static int dl_init(DSO *dso);
static int dl_finish(DSO *dso);
static int dl_ctrl(DSO *dso, int cmd, long larg, void *parg);
#endif
static char *dl_name_converter(DSO *dso, const char *filename);
static char *dl_merger(DSO *dso, const char *filespec1, const char *filespec2);
static DSO_METHOD dso_meth_dl = {
"OpenSSL 'dl' shared library method",
dl_load,
dl_unload,
dl_bind_var,
dl_bind_func,
#if 0
NULL,
NULL,
#endif
NULL,
dl_name_converter,
dl_merger,
NULL,
NULL
};
DSO_METHOD *DSO_METHOD_dl(void)
{
return(&dso_meth_dl);
}
static int dl_load(DSO *dso)
{
shl_t ptr = NULL;
char *filename= DSO_convert_filename(dso, NULL);
if(filename == NULL)
{
DSOerr(DSO_F_DL_LOAD,DSO_R_NO_FILENAME);
goto err;
}
ptr = shl_load(filename, BIND_IMMEDIATE |
(dso->flags&DSO_FLAG_NO_NAME_TRANSLATION?0:DYNAMIC_PATH), 0L);
if(ptr == NULL)
{
DSOerr(DSO_F_DL_LOAD,DSO_R_LOAD_FAILED);
ERR_add_error_data(4, "filename(", filename, "): ",
strerror(errno));
goto err;
}
if(!sk_push(dso->meth_data, (char *)ptr))
{
DSOerr(DSO_F_DL_LOAD,DSO_R_STACK_ERROR);
goto err;
}
dso->loaded_filename = filename;
return(1);
err:
if(filename != NULL)
OPENSSL_free(filename);
if(ptr != NULL)
shl_unload(ptr);
return(0);
}
static int dl_unload(DSO *dso)
{
shl_t ptr;
if(dso == NULL)
{
DSOerr(DSO_F_DL_UNLOAD,ERR_R_PASSED_NULL_PARAMETER);
return(0);
}
if(sk_num(dso->meth_data) < 1)
return(1);
ptr = (shl_t)sk_pop(dso->meth_data);
if(ptr == NULL)
{
DSOerr(DSO_F_DL_UNLOAD,DSO_R_NULL_HANDLE);
sk_push(dso->meth_data, (char *)ptr);
return(0);
}
shl_unload(ptr);
return(1);
}
static void *dl_bind_var(DSO *dso, const char *symname)
{
shl_t ptr;
void *sym;
if((dso == NULL) || (symname == NULL))
{
DSOerr(DSO_F_DL_BIND_VAR,ERR_R_PASSED_NULL_PARAMETER);
return(NULL);
}
if(sk_num(dso->meth_data) < 1)
{
DSOerr(DSO_F_DL_BIND_VAR,DSO_R_STACK_ERROR);
return(NULL);
}
ptr = (shl_t)sk_value(dso->meth_data, sk_num(dso->meth_data) - 1);
if(ptr == NULL)
{
DSOerr(DSO_F_DL_BIND_VAR,DSO_R_NULL_HANDLE);
return(NULL);
}
if (shl_findsym(&ptr, symname, TYPE_UNDEFINED, &sym) < 0)
{
DSOerr(DSO_F_DL_BIND_VAR,DSO_R_SYM_FAILURE);
ERR_add_error_data(4, "symname(", symname, "): ",
strerror(errno));
return(NULL);
}
return(sym);
}
static DSO_FUNC_TYPE dl_bind_func(DSO *dso, const char *symname)
{
shl_t ptr;
void *sym;
if((dso == NULL) || (symname == NULL))
{
DSOerr(DSO_F_DL_BIND_FUNC,ERR_R_PASSED_NULL_PARAMETER);
return(NULL);
}
if(sk_num(dso->meth_data) < 1)
{
DSOerr(DSO_F_DL_BIND_FUNC,DSO_R_STACK_ERROR);
return(NULL);
}
ptr = (shl_t)sk_value(dso->meth_data, sk_num(dso->meth_data) - 1);
if(ptr == NULL)
{
DSOerr(DSO_F_DL_BIND_FUNC,DSO_R_NULL_HANDLE);
return(NULL);
}
if (shl_findsym(&ptr, symname, TYPE_UNDEFINED, &sym) < 0)
{
DSOerr(DSO_F_DL_BIND_FUNC,DSO_R_SYM_FAILURE);
ERR_add_error_data(4, "symname(", symname, "): ",
strerror(errno));
return(NULL);
}
return((DSO_FUNC_TYPE)sym);
}
static char *dl_merger(DSO *dso, const char *filespec1, const char *filespec2)
{
char *merged;
if(!filespec1 && !filespec2)
{
DSOerr(DSO_F_DL_MERGER,
ERR_R_PASSED_NULL_PARAMETER);
return(NULL);
}
if (!filespec2 || filespec1[0] == '/')
{
merged = OPENSSL_malloc(strlen(filespec1) + 1);
if(!merged)
{
DSOerr(DSO_F_DL_MERGER,
ERR_R_MALLOC_FAILURE);
return(NULL);
}
strcpy(merged, filespec1);
}
else if (!filespec1)
{
merged = OPENSSL_malloc(strlen(filespec2) + 1);
if(!merged)
{
DSOerr(DSO_F_DL_MERGER,
ERR_R_MALLOC_FAILURE);
return(NULL);
}
strcpy(merged, filespec2);
}
else
{
int spec2len, len;
spec2len = (filespec2 ? strlen(filespec2) : 0);
len = spec2len + (filespec1 ? strlen(filespec1) : 0);
if(filespec2 && filespec2[spec2len - 1] == '/')
{
spec2len--;
len--;
}
merged = OPENSSL_malloc(len + 2);
if(!merged)
{
DSOerr(DSO_F_DL_MERGER,
ERR_R_MALLOC_FAILURE);
return(NULL);
}
strcpy(merged, filespec2);
merged[spec2len] = '/';
strcpy(&merged[spec2len + 1], filespec1);
}
return(merged);
}
#if defined(__hpux)
static const char extension[] = ".sl";
#else
static const char extension[] = ".so";
#endif
static char *dl_name_converter(DSO *dso, const char *filename)
{
char *translated;
int len, rsize, transform;
len = strlen(filename);
rsize = len + 1;
transform = (strstr(filename, "/") == NULL);
{
rsize += strlen(extension);
if ((DSO_flags(dso) & DSO_FLAG_NAME_TRANSLATION_EXT_ONLY) == 0)
rsize += 3;
}
translated = OPENSSL_malloc(rsize);
if(translated == NULL)
{
DSOerr(DSO_F_DL_NAME_CONVERTER,
DSO_R_NAME_TRANSLATION_FAILED);
return(NULL);
}
if(transform)
{
if ((DSO_flags(dso) & DSO_FLAG_NAME_TRANSLATION_EXT_ONLY) == 0)
sprintf(translated, "lib%s%s", filename, extension);
else
sprintf(translated, "%s%s", filename, extension);
}
else
sprintf(translated, "%s", filename);
return(translated);
}
#endif